can not build - undefined reference to `HTTPClient'

[marcogracklauer]

Hi,
i've pulled the current version, switched to "Default" -> "General" -> "build all" and get an error:

/Users/Marco/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: .pio/build/esp32dev/lib2c7/libHTTPClient.a(HTTPClient.cpp.o):(.literal._ZN10HTTPClient5beginE6String+0x8): undefined reference to `HTTPClient::begin(String, char const*)'
/Users/Marco/.platformio/packages/toolchain-xtensa-esp32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: .pio/build/esp32dev/lib2c7/libHTTPClient.a(HTTPClient.cpp.o): in function `HTTPClient::begin(String)':
/Users/Marco/.platformio/packages/framework-arduinoespressif32/libraries/HTTPClient/src/HTTPClient.cpp:182: undefined reference to `HTTPClient::begin(String, char const*)'
collect2: error: ld returned 1 exit status
*** [.pio/build/esp32dev/firmware.elf] Error 1
================================================================= [FAILED] Took 20.61 seconds =================================================================

Environment    Status    Duration
-------------  --------  ------------
esp32dev       FAILED    00:00:20.610
============================================================ 1 failed, 0 succeeded in 00:00:20.610 ============================================================

When I switch to an other board, there are other errors, for example:

Compiling .pio/build/nodemcuv2/src/plugins/WeatherPlugin.cpp.o
src/plugins/BigClockPlugin.cpp: In member function 'virtual void BigClockPlugin::loop()':
src/plugins/BigClockPlugin.cpp:19:29: error: 'getLocalTime' was not declared in this scope
   if (getLocalTime(&timeinfo))
                             ^
src/plugins/ClockPlugin.cpp: In member function 'virtual void ClockPlugin::loop()':
src/plugins/ClockPlugin.cpp:19:29: error: 'getLocalTime' was not declared in this scope
   if (getLocalTime(&timeinfo))
                             ^
src/messages.cpp: In member function 'void Messages_::scrollMessageEveryMinute()':
src/messages.cpp:73:31: error: 'getLocalTime' was not declared in this scope
     if (getLocalTime(&timeinfo))
                               ^
src/messages.cpp: In function 'void handleMessage(AsyncWebServerRequest*)':
src/messages.cpp:136:25: error: 'stoi' is not a member of 'std'
         graph.push_back(std::stoi(token));
                         ^
src/plugins/PongClockPlugin.cpp: In member function 'void PongClockPlugin::drawCharacter(int, int, std::vector<int>, int, uint8_t)':
src/plugins/PongClockPlugin.cpp:12:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < bits.size(); i += bitCount)
                                 ^
src/plugins/TickingClockPlugin.cpp: In member function 'virtual void TickingClockPlugin::loop()':
src/plugins/TickingClockPlugin.cpp:11:29: error: 'getLocalTime' was not declared in this scope
   if (getLocalTime(&timeinfo))
                             ^
src/plugins/PongClockPlugin.cpp: In member function 'virtual void PongClockPlugin::setup()':
src/plugins/PongClockPlugin.cpp:197:29: error: 'getLocalTime' was not declared in this scope
   if (getLocalTime(&timeinfo))
                             ^
src/plugins/PongClockPlugin.cpp: In member function 'virtual void PongClockPlugin::loop()':
src/plugins/PongClockPlugin.cpp:216:33: error: 'getLocalTime' was not declared in this scope
       if (getLocalTime(&timeinfo))
                                 ^
*** [.pio/build/nodemcuv2/src/plugins/BigClockPlugin.cpp.o] Error 1
*** [.pio/build/nodemcuv2/src/plugins/ClockPlugin.cpp.o] Error 1
src/main.cpp: In function 'void connectToWiFi()':
src/main.cpp:117:8: error: 'class ESP8266WiFiClass' has no member named 'setHostname'
   WiFi.setHostname(WIFI_HOSTNAME);
        ^
*** [.pio/build/nodemcuv2/src/messages.cpp.o] Error 1
*** [.pio/build/nodemcuv2/src/plugins/PongClockPlugin.cpp.o] Error 1
*** [.pio/build/nodemcuv2/src/plugins/TickingClockPlugin.cpp.o] Error 1
*** [.pio/build/nodemcuv2/src/main.cpp.o] Error 1
========================================================= [FAILED] Took 2.40 seconds =========================================================

Environment    Status    Duration
-------------  --------  ------------
nodemcuv2      FAILED    00:00:02.401
==================================================== 1 failed, 0 succeeded in 00:00:02.401 ====================================================

I've tried on a fresh pull and one with some modifications as mentioned in the instructions but still similar errors.
What's wrong?

[Janideluxe]

src/messages.cpp: In function 'void handleMessage(AsyncWebServerRequest*)': src/messages.cpp:136:25: error: 'stoi' is not a member of 'std' graph.push_back(std::stoi(token));

to eliminate this error for me worked to remove "stoi" and add "atoi"